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October 1, 2011, 04:44 |
Wall scale not converging
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#1 |
Senior Member
Arun raj.S
Join Date: Jul 2011
Posts: 210
Rep Power: 16 |
Hi all,
Actually I am analyzing the distortion effects on a complete rotor annulus.. So I need to get the compressor map with and without distortion..For this i initially i analyzed the complete rotor model without distortion, i got the compressor model..When I am keeping the distortion screen in front of the rotor..the problem starts, the wall scale is not converging. I am not understanding the problem in this. but THE MOMENTUM , HEAT TRANSFER AND TURBULENCE GET CONVERGING Ref pressure= 0 pa Fluid: air ideal gas Heat transfer: total energy Turbulence model: SST Wall function: automatic Transitional turbulence: Fully Turbulent. RPM= 1800 1. How can I resolve this problem? 2. Do I have to go for expert parameters?.. I have found so many options in expert parameters reg convergence of wall scale? I have added the image of model Hi Glenn, I guess You know it better Cheers, Arun |
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October 3, 2011, 18:52 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,862
Rep Power: 144 |
It is very unusual for wallscale not to converge yet the flow equations to converge. Something is wrong with your setup. Is your mesh quality OK? Try a higher quality mesh or running double precision.
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